Hvac pressure

[tcadillac]

I've looked all over an can't really find a solution to my problem. I just rented some studio space consisting of a control room and a sealed vocal booth. The previous owner had someone install a central air and heat system to cool the Control Room and Booth. I waited until I finished all of the painting and wood floors to get the power turned on at the studio. Here is my problem. The HVAC System is extremely quiet (Isolated) in the control room which has 2 vents. I noticed that in the Vocal Booth there is one Vent on the ceiling. It was really cool and quiet inside the booth with the door open. When I closed the door the seal was really good, but that's when I noticed the vent whistling really loud. I opened the door back up and whoosh no vent noise. I take it that the booth is sealed really well. I would really like to be able to use that ac system during tracking and while I am working. It gets really hot out here in Texas. Does anyone have any ideas about how to make this work without having to turn off the A/C.


Also, does anyone know where to get about 300 Sq/Ft of OC 703 in the Dallas, Texas Area? I tried home depot an the minimum order they do is 1000 Sq/Ft.

Thanks....

[AVare]

From what you described the booth does not have a return vent. Easy enough to build. A absorbent lined duct of the same size as teh supply duct.


703 is NOT carried by Home Despot etc! Look at commercial insualtion/ac/refrigeration companies int he yellow pages. Read teh forum titles. NOte the one "Building Products
Find out where to get building materials in your local area. If you find a good outlet post it and others will be able to access it through the search engine."

There is an entire thread right almost at the top about 703!

http://www.johnlsayers.com/phpBB2/viewtopic.php?t=1643

Andre

[rod gervais]

From what you described the booth does not have a return vent. Easy enough to build. A absorbent lined duct of the same size as teh supply duct.

Adding to what Andre said above,

It's important that the return vent ties into the return air plenum, otherwise the system will not work properly.

I would actually oversize the return air duct - that will minimize the back pressure on the supply register.

Rod

[tmix]

tcadillac,
Try Insulation Suppy in Dallas or SPI.
They both carry it. SPI may be cheaper, they are a larger insulation chain.
Good luck!

I also agree with the others, Just venting a exit duct into a quiting chamber will work, venting the duct into the system return will work best.

Tom

[tcadillac]

Man I hate having to cut cut a hole in this Vocal Booth. It is pretty well made and quiet. OK, I have a strange feeling that the guy before me did this himself. I see hoses going to all the vents, but I don't see any return hoses coming from any rooms. I have 2 hoses going to the control room vents, 1 hose going to the hallway ceiling vent, and 1 to the vocal booth ceiling vent. I have another hose going out to a duct on the roof. The AC system is in the back room sitting on top of some sort of vented box. Is the return supposed to go back to the AC system itself? I am going to go over there tomorrow and take some pictures and ask you guy's if you see anything strange or anything that might be wrong.....

Thanks guys